@media screen and (max-width:992px) {
    .leftss{
        display: none;
    }
    .cents{
        width:100%;
    }
}
*{
    margin:0; padding:0;
}
html,body{
    width: 100%;height: 100%;
}

body{
    background: url();
    background-size: 100% 100%;
    background-position: center center;
    overflow: hidden;
}